THERE ARE GRADES OF GEAR PRECISION?

1. Gear precision is mainly to control the gear in the operation of the gear transmission between the precision, such as the transmission of smoothness, instantaneous speed fluctuations, if there are alternating reverse operations, whether the tooth side clearance is small, if there is a shock load, should be slightly increased precision, thereby reducing the shock load to bring the damage to the gear.

2. If these design requirements are relatively high, the gear accuracy should be set a little higher, and vice versa can be set a little lower.

3. However, setting the gear accuracy too high raises the processing cost and needs to be balanced across the board.

4. Your parameters above basically belong to the more commonly used gear, whose accuracy can be set to 7FL, or 7-6-6GM precision label interpretation:

7FL: the three tolerance groups of the gear precision of the same level 7, tooth thickness of the upper deviation for the F class, tooth thickness of the lower deviation for the L class

7-6-6GM: the accuracy of the group of tolerance zones of the gear is grade 7, the accuracy of the second group of tolerance zones of the gear is grade 6, the accuracy of the third group of tolerance zones of the gear is grade 6, the upper deviation of the tooth thickness is grade G, and the lower deviation of the tooth thickness is grade M.

5. Because there is no formula for gear accuracy, there is no need to calculate it, so check the manual.

6. The determination of the level of accuracy is the result of a comprehensive analysis by the engineer of the transmission requirements for precision, or high load, alternating load,...  This will set the level of accuracy slightly higher.

7. It has 5, 6, 7, 8, 9, 10 accuracy levels. The smaller the value, the higher the accuracy.